Juniper Networks has put out an important advisory related to their routers.  It appears that malformed BGP packets may induce BGP session flapping.

        JUNOS releases from 7.3 to 8.4 are vulnerable to crafted IPV6 messages that may crash the kernel.  Versions 8.5R1 and above have this memory issue fixed.

        If you're a registered user, please see this link for the BGP issue.
https://www.juniper.net/alerts/viewalert.jsp?actionBtn=Search&txtAlertNumber=PSN-2007-12-008&viewMode=view

And this one for the IPv6 issue

www2.juniper.net/alerts/viewalert.jsp

        There's a discussion about the problems at:
https://puck.nether.net/pipermail/juniper-nsp/2007-December/009296.html

        Because this crash can be remotely triggered, this issue should be addressed as soon as is practical.